Solar Power Rocks logo

Solar Power Rocks - Clear info on home solar power rebates, tax credits, and other benefits

Get solar installed for $0 down in California!

Get quotes from trusted local installers

Privacy Assurance - We will not sell or otherwise transmit your personal information to others without your permission.

Welcome to the Ultimate Guide to Home Solar Panels in California

For every dollar you invest in solar panels in California,
you get an average of $4.67 in savings.

Total savings
over 25 years

Power bill savings &
production incentives


Cost of solar
in California

Up-front cost after
1st-year incentives

$ $ $ $


return per
dollar invested

Learn More


Your 2020 guide to getting solar panels for your home in California

This page is a complete guide to the complicated and sometimes confusing process of installing solar panels on your California home. Since there's a lot to consider, we've separated the page into sections to help you find what you are looking for. If you find this page useful, please share it with someone who might also find it interesting!

red ribbon

** What's new for 2020 **

This year, all new California homes will be required to have solar installed when they're built.

If you go solar in California in 2020, you'll be signed up for "Net Energy Metering 2.0", aka NEM 2.0, a 20-year contract from your utility company that defines how much they'll pay you for your excess solar energy, and how much you'll have to pay every month to maintain a 2-way connection. We get more in-depth on what NEM 2.0 means in our section on net metering, below.

No matter where you live in California, solar panels on your roof can save you a lot of money. Connect with a solar expert as soon as possible to see how much you can save!

What you'll find on this page:

The Solar Strategy section is focused on the 3 ways of paying for solar in California, so you can decide which is best for you. We've created a tool that asks you a few questions and recommends whether you should pursue a solar lease, loan, or outright purchase. Then, we provide detailed analysis of how each works.

The Solar, Step by Step section is a guide to everything that happens from before you get solar quotes to the time when the panels are on your roof and you're getting ready to claim that sweet solar tax credit.

The Policy Information section contains all our latest research on the rules set by lawmakers and the Public Utilities Commission, which determine how easy it is to go solar in California. These policies and rules govern everything from renewable energy mandates to interconnection, and have a huge effect on the viability of solar.

Finally, the Solar Incentives section includes information about money-back rebates and grants, tax credits, and tax exemptions for going solar in California.

Click any of the boxes below to go to that section of the page, or scroll down to read the page in order.

Your Solar Strategy in California

Figuring out the best way to go solar in California can be a little daunting. From loans and leases to power-purchase agreements, there are a lot of options out there. To help you pick the one that might be best, we've created the handy decision tool below.

We'll ask you a few simple questions about you and your home. Once you're done, we'll recommend a good option. Further down this page, we provide cost estimates and example return-on-investment calculations for all the various options:

How should you pay for solar?

Use our decision tool to find out!

How to pay for solar panels in California

The chart above shows the 25-year returns for an investment in solar for an average California home, whether you choose to purchase a system with cash or pay over time with a loan or lease. How much you can save is greatly dependent on how much energy you need, which determines how big of a solar system (i.e., how many panels) you need.

According to the U.S. Energy Information Administration, the average California home needs a bit over 6,500 kilowatt-hours (kWh) per year. If you use as much electricity as the average Californian, at an average pirce of $.19/kWh, you pay almost $1,250 per year for that electricity. But if you live in places with higher costs—places like San Diego, the Bay Area, and SoCal—you might pay up to $.30/kWh, meaning the same 6,500 kWh costs you almost $2,000 per year. Ouch!

To make that much electricity from solar panels, you'd have to install a 5.2-kW solar system made up of sixteen 325-watt panels. For the purposes of the estimates below, we assume this is the size you need. If you're paying more than $2,000 per year for electricity, you're a high user, and need a larger system. But the good news is a larger system means more savings, and lower per-watt up-front cost!

Here's a handy guide to help you figure out how much electricity you need:

blue info ribbon

How much solar does your home need?

Sizing a solar panel system to your home's electric usage can be done by taking look at your energy bills over a year.

Most utility companies provide information about your last few months of usage on your bill, but you can probably get more on their website. A few lucky customers get a year and a half like this:

a sample energy bill before solar panels with usage details

We'll spare you the trouble of averaging that column, and tell you that this house uses about 2,200 kWh per month. That's quite a bit higher than the national average, which means the homeowner could really be helped by solar power!

Typically, your neighbors in California use about 550 kWh a month on average. So, take 550 kWh and divide by the amount of kWh one solar panel produces over the course of a month (about 35 kWh), round up and you get a 16 panel installation. 16 panels x 325 watts per panel equals a 5,200 watt system (5.2-kW).

Again though, these are just rough estimates. It's best to connect with an expert we trust near you who can appropriately size a system for your California home and help you get it done right and as affordably as possible.

Referring back to the colorful chart above, the purchase option offers the best returns over time, but it also requires a big up-front investment ($10,724 in the first year after incentives and energy bill savings). If you take a solar loan or home equity line of credit (HELOC), your savings over the first 15 years will be smaller, but you won't have to invest any of your own cash. You'll still come out tens of thousands ahead.

The option with the smallest savings is for a solar Power Purchase Agreement (PPA). Your installer owns the panels on your roof, and you accumulate electricity bill savings over time. PPAs are an excellent option if you don't have any equity or cash to put down.

No matter which option you choose your long-term savings from home solar in California far outweigh the costs of investing in the system.

In the following sections, we'll explain three different ways you can pay for solar in California:

How much can you save with solar?

Find out

Option 1: Paying cash for solar

Paying cash for solar is best if you have the money and aren't able to take on any new credit obligations. Having the cash to plunk down on a solar system can earn you great returns without having to mess with the ongoing payments of a loan or PPA.

Because you'll fully own your system, you’ll reap all the benefits, like the federal solar tax credit of 26% of the costs of your system. Your solar panels will operate under warranty for 25 years, making you energy that will quickly pay off their initial cost and keep you in solar savings for decades. We estimate an investment in a 5.2-kW solar system for a California home will pay for itself in around 7 years, leaving you nearly two decades of pure profit and free energy.

If you don't typically owe any federal taxes (e.g., if you're retired or on a low fixed income), look into a PPA.

Here’s how the numbers pencil out if you pay cash for a typical 5.2-kW solar system in California (anywhere south of, say, Sacramento):

  • Up-front cost: You spend $16,640 up front on a solar system.
  • Tax credit:You get 26% of that back as a tax credit the year after you pay for the installation, which is $4,326 off, leaving a net 1st-year cost of $12,314.
  • Annual energy bill savings: Your panels produce enough electricity to save you about $1,590 in the first year, for a final net cost of $10,724.
  • Payback timeline: The energy savings you accrue will pay back the initial cost of the system in year 8, and every cent after that goes right to your bottom line
  • Total savings: The panels will produce energy for at least 25 years, with a total profit after payback of about $33,700. That’s not chump change, is it?
  • Environmental benefits: On top of all that green in your pocket, you've also saved some green for nature. The CO2 saved by your panels is equal to planting at least 76 beautiful trees every year. That's equal to planting an 8-acre forest over the minimum 25-year life of your panels.
Keep in mind, the numbers above are based on an average home in California. If you're ready for a custom quote for a solar panel system, our network of experts are on call to assist you. Simply sign up for personalized assistance on our special solar deals page.

Option 2: Using a loan to pay for solar

Solar loans work best if you have good credit and enough income to claim the full federal solar tax credit of 26% of costs. There's no need to tie up cash in an asset when you expect to make money from that asset.

In California, your loan should leave you cash flow positive—meaning the cost of paying your loan over a full year will never exceed the savings you see on your electric bill from solar during that year. In fact, you’ll see a handsome profit over the 25-year life of your system.

Those savings after the loan payment might be slim, but not for long; each year, the electric company raises their rates, but your loan payments stay the same. This means you'll eke out a little more savings every year. By year 15, you’ll have paid off the loan and you can enjoy a decade or more of free electricity!

The best way to pay for solar in California is with your home equity or a solar loan.

A Home Equity Line of Credit (HELOC) allows you to get the best interest rates and work with your own bank. Going solar also adds value to your home—value that is property tax exempt in California. A solar loan is strucutred a bit differently, but almost all solar companies in California now work with a financing partner to provide loans to customers based on the expected value of the electricity produced by the system. Read more about loans for home solar.

Look for an interest rate around 4.5% and you’ll see big savings over the long term. Paying with a HELOC also gives you the option of using the tax credit for something other than paying down principal, if you need that option. With a solar loan, you may be required to make a balloon payment around tax time next year, but it will keep your monthly payments lower, which is a nice bonus.

Here’s how the numbers pencil out if you purchase your home solar panels with a loan in California:

  • Loan principal: With a loan, you'll take out the full amount for the system, which in this example is $16,640. We’ll assume a Home Equity Line of Credit at 4.5% interest amortized over 15 years.
  • Federal Solar Tax credit: Next April (or whenever you file), you'll enjoy a federal tax credit of $4,326, just for installing solar panels. You could pay the loan down by that amount and re-amortize to lower your payments, or you could bank the tax savings and come out way ahead.
  • Monthly savings: At the start, your loan payments should be $127 per month, but your electric bill savings will be about $132.50 per month, leaving you with a very small net savings of just about $62 in the first year.
  • Bill savings over time: That might sound like small potatoes to start with, but as the utility raises rates, your loan payments stay the same. Counting the tax credit in year 1, you’ll have saved about $7,200 by the time you pay off the loan. After that, you get FREE solar electricity for the next 10+ years while your panels remain under warranty. The final savings with a loan is nearly $27,500, which is pretty awesome for a $0-down investment.
  • Environmental benefits: The icing on the cake is that you've also saved enough carbon dioxide in the atmoshpere to equal 76 beautiful trees.

Here's some more info on kinds of home solar financing, each with benefits and drawbacks:

Solar Loans - Your solar installer will likely offer financing for your system. If you go with a big company like Sunrun, you'll be offered a loan direct from them (Sunrun calls theirs the BrightAdvantage solar loan). If you choose a small installer, they'll probably work with a third-party loan provider like Mosaic.

These loans are tailor-made for solar buyers. They keep your payments low by requiring early repayment of the amount of your tax credit.

Essentially, you’re set up with 2 seperate loans; one with 0% interest that covers 15-30% of the cost of your system, with payment in full due by the end of the first year of ownership, and a second loan for the remainder of the costs, with interest rates based on your credit spread over the 10 to 15 years following installation.

PACE Loans - Property Assessed Clean Energy (PACE) financing is a newer way to fund solar energy systems, usually backed by municipal bonds and paid back through your property tax bill.

PACE loans are great for people with equity but imperfect credit, but the interest rates are usually a little higher than other loans. The main benefit of a PACE loan is the interest paid is most often tax-deductible.

If you want to learn more about PACE loans, we’ve written extensively about them in a couple other posts: A PACE loan infographic and a more in-depth blog about PACE Loans.

Keep in mind, the numbers above are based on an average home in California. If you're ready for a custom quote for a solar loan, our network of experts are on call to assist you. Simply sign up for personalized assistance on our special solar deals page.

Option 3: Buying the electricity, not the panels with a Power Purchase Agreement (PPA)

In a Power Purchase Agreement, your solar company installs panels on your home, but you don't own them. You agree to buy the electricity from the panels at a set rate that's lower than your existing electric rate.

PPAs can be a smart choice if you have decent credit, low income, and/or are newly retired. And even though the savings are smaller than if you purchased a solar system, you can still avoid thousands in payments to the utility company. Though, if you can't commit to a 20 or 25-year contract, it can be a hassle to transfer the PPA when you sell your home.

Here’s how the numbers pencil out if you sign up for a solar PPA in California:

  • The agreement: You sign a contract to purchase solar electricity at a set rate. These rates vary, but we’ll use $.13/kWh as an example.
  • How it works: The solar electricity replaces most of your utility bill, but you now get 2 bills each month; 1 from the utility company for a small amount, and 1 from the solar company. In our example, your previous utility bill would have been around $142 per month. The new bill would be for about $10 per month, and the new solar bill would be for about $91. In total, that represents an average savings of a little leass than $41 per month, or $490 per year.
  • Lifetime savings: That might not seem like a lot, but it adds up. And the savings get larger over time, because the PPA cost increases by only 3% per year, whereas electricity from the utility has gone up by an average of 3.5% per year for the past few decades. Over a 20-year PPA contract, you’d save an estimated $16,093. That’s with no money down and no messing with tax credits!
  • Environmental savings: The CO2 savings from those panels is like planting 76 trees per year, every year!
Keep in mind, the numbers above are based on an average home in California. If you're ready for a custom quote for a solar PPA, our network of experts are on call to assist you. Simply sign up for personalized assistance on our special solar deals page.

How much can you save with solar?

Find out
blue info ribbon

Is solar right for your California home?

A beautiful home with solar panels

If you answer “yes” to each of the following questions, you’re probably a good candidate for solar.

  • Do you own your home?
  • Does your roof get direct sun for most of the day?
  • Does your electricity bill bother you (specifically how much you have to pay)?

The ideal home for solar has a south- or west-facing roof that gets little to no shade throughout the day. The roof can be covered with anything from asphalt shingles to clay or slate tiles, but the easiest roofs to work with are asphalt and standing-seam metal roofs.

Even if your home does not completely meet these conditions, you may still see huge savings from going solar. Your installer will take everything into account when providing you with a savings estimate.

And hey, if your roof just isn't right at the moment, that doesn't mean solar power can't improve your life. For a quick way to bring some of the benefits of solar, check out outdoor solar lights. Installing them beats running wires under your yard!

We get more in-depth with roof shape, covering, and orientation in two useful articles:

The step-by-step process for going solar in California

The most important thing to know about the entire process of going solar is that your solar installer is good at this stuff.

They'll make sure all the T's are crossed and the I's are dotted during the whole process:

Step 1: Getting and Comparing Quotes

There are now many slick solar estimate tools online. Some have you draw lines on your roof from satellite imagery to place your panels and explain your savings. Others pit solar companies against each other in an automated battle for your dollars. Others still track the sun over the course of the year to show you your electric production with the panels you just struggled to draw on your roof.

In our view, they're all a waste of time. If you're serious about installing panels, the best way to get an accurate view of your costs and savings is to get actual quotes instead of messing around with these online tools.

After all, you're not a solar PV designer, it's better to let an expert who knows what they're doing use their own fancy tools for you (believe us—they have fancy tools).

Also, nothing beats a human connection from a trusted source. We've been forging relationships with strong partners and installers since 2007. They know what they're doing, and they're good people.

When you complete our form, we'll connect you with them. You’ll quickly get an accurate reflection of how much electricity your roof can make, how much your system will cost, and how long it will take before you see a profit. In California, with a loan or PPA, you'll be in the green immediately.

yellow tip ribbon

What you should look for in a solar installer

Solar customers with a contractor looking at contract

If you seek solar quotes directly from providers without our help, be sure to judge them by the following criteria. All partners in our network are:

  • Trained and Skilled - The standard for solar installers is certification by the North American Board of Certified Energy Practitioners (NABCEP for short). That means they’ve undergone training and passed tests that ensure they know what they’re doing.
  • Experienced - How many solar systems has the company installed? A minimum of 10 is a good number to shoot for, unless you know they company well. Of course, choosing Tesla or Sunrun means you’re with a company that has installed thousands of systems, but their process can seem less personal, and their prices are often higher than smaller companies.
  • Well-regarded - Look at reviews of solar providers on Yelp and Google and other review sites. Or simply ask the salesperson to speak with one of the company’s former clients. Solar owners generally love talking about their systems, and you can benefit from their experience.
  • Licensed, bonded, and insured - Make sure the installation crew includes a licensed electrician, because if not, that can be a surprise charge to get the system hooked up.And of course, the company you’re going with has to be bonded and insured in case they do any damage to your home.

The solar quote process

Your first contact with one of our solar providers will be over the phone. They’ll take a look at a satellite photo of your roof and verify some simple details about you and your home. Many will be able to provide you a complete estimate without coming to your house. If you prefer, you can review your estimate in person.

blue info ribbon

Information included in solar quotes

A sample solar quote

Your quote will include information about how many panels will be used, how much electricity they can produce, your expected savings over time, and more.

  • System size - System size isn't just about the square footage the panels will occupy on your roof. In the solar industry, size refers to the number of watts your system can produce in full sun. The average solar panel puts out 250 watts at a time, so your installer would call a system of 20 panels a "5-kW system."
  • Energy production - Your solar panels' energy production is measured in kilowatt-hours (kWh), just like your electricity usage is measured by your utility company. The quote will include an estimate of the average kWh your system will produce per year, and might even show you how the seasons affect expected production by month.
  • Cost and incentives - Solar system prices are quoted as "total cost" and "dollars per watt." For example, a 5-kW system that costs $15,500 has a $3.10 cost per watt. These are the first figures to compare what you’re being offered. The installer should also show you the available incentives that bring the net cost of the installation down. Everyone is eligible for the federal solar tax credit of 26% of the system's cost, but there may be local incentives available, as well.

    Note: if you're considering a PPA, you won't be eligible for incentives, and the cost section will include your expected costs per kWh.

  • Equipment - Not all solar panels are created equal, but nearly all the panels used by reputable installers should be able to reliably make electricity for the next 25 years. The options are numerous, and your installer should be able to provide you quotes for a few different kinds. For example, if having panels made in the USA is important to you, your installer should be able to offer you a quote for a system using panels from the USA and panels made elsewhere.
  • Warranties - A solar system has multiple warranties that cover the panels, the inverter, and the installer’s work on your roof. What can change between quotes is the length of the warranties and what they cover. Read our full post on solar warranties and what they cover.

Deciding which solar quote is the best

Now for the easy part: choosing which solar company has the best offer. If one installer offers a lower cost per watt using great equipment, they might be the best choice. Just keep in mind that important considerations other than price set solar companies apart.

Larger installers are all about full service and efficiency, making the process of going solar fast and streamlined. They all offer in-house financing options and multiple ways to pay, and they might also throw in bonuses like free monitoring equipment and long-term warranties.

Smaller installers don’t have the overhead of national solar companies, so they can compete more on price. You might even develop a meaningful relationship with a member of your community who has been doing this for a while, and if something goes wrong with your system, it might feel better to pick up the phone to call them rather than an 800 number tied to a high-volume call center. Just keep an eye on their financing offerings. Third-party lenders for solar financing sometimes include finance charges or higher interest that can mean you save less in the long run.

For more of our guidance on choosing an installer, check out these useful articles:

Step 2: Financing your system

Pile of cash

If you plan to pay up front, this step is easy. Just get your checkbook out and make it happen, high-roller! But if you’re interested in a loan or PPA, it’s time to explore options.

Many installers will offer you financing at this point. Compare their offer to the other options you have. If they offer third-party financing, it might be time to explore a HELOC with your bank before you sign their financing arrangement.

We discussed the options in the section on loans above, but here’s a quick refresher:

  • Home Equity - Probably the best way to pay for solar, because you control it, the rates are lower, and you can repay it in a more flexible way.
  • Solar loans - Most solar companies work with a financing partner to offer solar loans. If you choose a big installer like Sunrun, Vivint or Tesla/Solarcity, your loan will be handled through their own online portal. Many small and mid-sized installers offer loans that are managed by a partner like Mosaic, though whose website you'd be signing documents and making payments. These loans are usually structured with the solar tax credit as a balloon payment after 1 year, and the balance of the system cost as a long-term loan at 5%-7% interest.
  • PACE loans - Property-Assessed Clean Energy financing is good for people who don’t have amazing credit or tons of equity, but who plan to live in their home for years to come and don’t mind slightly higher interest rates. The loan is repaid through your property tax bill, the interest is often tax-deductible, and repayment can be spread across as many as 25 years.
yellow tip ribbon

Don't forget about PPAs

If you don’t mind giving up a little control and letting your solar company own the panels, choose a PPA instead. These are only available through an installer, since they’ll be the ones who own the system.

Again, a PPA is best if you don’t have enough income to take advantage of the 26% federal solar tax credit, but it can work for anybody. It’s generally simpler than owning your own system. You just sign on the dotted line and start getting lower cost electricity from your solar company.

Step 3: Signing a contract, and what happens after

hands signing a contract

So, you’ve settled on a solar installer, and lined up the funding to pay for your shiny new panels! After you sign on the dotted line, it’s time for the pros to begin their work!

Site Inspections

First up, you’ll be seeing a few folks out for site inspections. There will be a master electrician out to look at your main circuit panel and wiring, a solar contractor to do a detailed analysis of your roof and determine the best placement for the panels, and a roofing contractor to examine the structural integrity of your roof.

Design and permitting

Following the inspections, the system designer will get to work on a digital design for your system. Your solar company will finalize the design and components, and give you a final price for approval. Once you’ve authorized the final design, your solar installer will finalize the documents and submit them to your locality for permitting.

How much can you save with $0-down solar?

Find out

Step 4: Installation, Inspection & Interconnection

Two workers install solar panels on a roof

California is a mature solar market and most installers have their procedures down pat. Installation, which used to take several days, now usually takes between 4 and 8 hours. Unless your roof is complicated or your electrical systems need updating, your crew should arrive, perform their duties, and be done within one day.

Installation day

Your installer will have already completed their site surveys and the workers on the truck will know exactly what they're installing and where. The crew will arrive at your home, set up their gear and get to work on your roof.

The first thing they'll do is mark off all the places the solar panel mounts will be placed, then attach those mounts to your roof. If you'd like to know more about the big metal bolts that will be screwed into your rafters, check out an article on how solar panels are attached to your roof.

The crew will then install the racks and panels, making connections that either wire the panels together in strings, or bring the wires from the micro-inverters together. If the crew includes a master electrician, that person will make the final connections between the panel, inverter, and your main AC panel (you may have to wait a day or two for the master electrician to finish the wiring).

blue info ribbon

What the heck are micro-inverters?

Traditionally, solar panels are wired in a series and connected to a single inverter box, which converts the electricity from DC to AC so it can be used in your home. Those large inverters work great for most people, but tend to make the system overall a tiny bit less efficient. Also, if a shadow or cloud passes over and blocks sunlight to some of your panels, the whole system suffers.

Micro-inverters, on the other hand, are attached to the back of every panel, which ensures that the maximum energy output of each panel reaches your home wiring. They cost a little more, but for a house with a partially-shaded roof, they can pay for themselves quickly.

Here's an infographic showing how the two types of inverters differ:

A string of solar panels with one shaded produces only half its rated power With micro-inverters, one shaded panel doesn't affect the whole bunch, allowing more electricity to get to the meter

Inspection and Interconnection

After your system is installed, it needs to be connected to the grid, and for that, you’ll need to have it inspected. Your installer will line all this up for you, too, and it may take between a couple days and a couple weeks to get the final inspections scheduled and completed.

An inspector examines and electrical box

Your city may require an inspection from the fire department, but the most important inspection will come from the utility company, who will send out someone to examine your system’s components and wiring and install the new electric meter that will record your solar kWhs.

At this point, you might even get a chance to turn the system on yourself!

Step 5: Operation, Maintenance, and claiming your tax credit

A squeegee cleaning solar panels

So you’ve got a shiny new solar system installed and it’s working. Now what? To be honest, not much. Solar panels are the platonic ideal of a Ron Popeil creation: set it and forget it. Still, you might find yourself compulsively checking your monitoring software to ensure those panels are working as promised.

After the deep breath of fresh air that comes with seeing your new electric bills, you'll relax into a state of solar bliss. During other moments, you'll smile as you think of all the acreage of forest you basically just planted using only the few hundred square feet of your roof.

There are a few important things to know after your panels are installed:

How to maintain your solar panels

Maintaining solar panels is a breeze. Solar panels are designed to handle rain, wind, snow, hail, and whatever nature throws at them for 25 years or more. All the maintenance a solar panel system needs is a yearly rinse and squeegee to take off extra dust and grime; maybe 2 or three times yearly if you live in a very dusty place. You can get by with a hose, if you need to, but you can also contract out the work to a cleaning company for a relatively low annual cost.

How to tell if your solar components are working

Other than cleaning, you may someday experience the failure of one or more components. Right off the bat, you should be able to see whether your panels are delivering energy on the panel of your inverter or net meter.

Read the user manual of your inverter to find out how to access the proper information, but most inverters will have a real-time production number on an LCD readout right on the front.

If you have a system with a central inverter, you will likely need to replace it after 10-15 years. If, instead, you have micro-inverters attached to each panel, they should last for the life of your system, and if not, they’re usually covered by 25-year warranties.

A micro-inverter attached to the underside of a solar module

Micro-inverters, like the one shown above, coupled with monitoring software can make it easier to tell when a panel isn't producing enough energy

Your installer may also have included monitoring software as part of your installation, either on a screen attached to your system or on the web. The monitoring software will tell you if the system is functioning properly, and, if you have micro-inverters on each of your panels, can even tell you if any panels are not working as they should.

If you discover that one or more of your panels isn’t working, it’ll be time to file a warranty claim.

What to do if your panels stop working

If you’ve done a good job by choosing one of our installer partners, you’ve got warranties that cover the installation (e.g., watertightness of roof penetrations and structural integrity of your roof), the panels (manufacturing defects) and the energy (production guarantee).

Your first step is to figure out who to contact. If you have a PPA contract, that step is simple: call your installer or contact them via their customer portal. That might also be the case if you sign up for a solar loan from a big installer. Oftentimes, the loan comes with a similar kind of protection.

a cracked solar panel

This isn't supposed to happen, so if it does, know who to call.

If, however, you went with a different installer, perhaps sourced through a different website, you’re probably stuck looking through the paperwork you got with the system to find the manufacturers of your panels, inverter, or other components.

How to claim the federal tax credit for solar

Claiming the Federal Solar Investment Tax Credit (ITC, for short) is easy, just have your personal assistant fax all the necessary paperwork to your accountant in the Caymans, and wait for your huge refund.

A fanned-out stack of a few 1040 tax forms

Oh wait, you don't have millions in an offshore account? Then we've got the necessary info for you. The ITC is claimed by filling out a special schedule, Form 5695, and entering the credit amount from that into your 1040 form.

For your edification and convenience, we've prepared a step-by-step guide to claiming the solar tax credit.

How much can you save with $0-down solar?

Find out

California Solar Policy Information

Ever wonder why solar seems to be everywhere in some states, but not in others? We did too.

State legislatures and public utilities commissions can enact rules to make solar power accessible for everyone. Favorable rules explain why some of the cloudiest states—New York, New Jersey, and Connecticut, are doing so well with solar, and yet some of those with the most natural solar resources—like Alabama, Mississippi, and Georgia—are doing so poorly.

Below is important information about the public policy, rules, and economic reasons that affect your ability to go solar here in California:

California's Renewable Portfolio Standard

100% by 2045

Grade: A

California's Renewable Portfolio Standard grade

California has one heck of a Renewables Portfolio Standard (“RPS”); 100% of electricity production must come from "carbon-free" sources of energy by 2045. If not, the utility companies get slapped with mighty high fees. Only Hawaii has a better goal, seeking 100% of its electricity from only solar and wind by 2045. But Hawaii's population is just 1.5 million people, and California's is nearly 27 times that at 40 million.

What we're saying is, getting electricity for 40 million people from carbon-free sources is a BIG deal.

Recently, the state has seen a victory for solar in the fight to keep net metering in place for new solar owners. Expect it to stay that way, at least for a couple more years, while the state continues to refine its approach as solar takes a larger and larger chunk of total electricity generation.

Learn more about Renewable Portfolio Standards

California's Solar carve-out and SRECs


Grade: F

California's Solar Carve-out grade

California’s strong RPS and geographic location have been a boon to residential solar. But if the RPS contained specific carve-outs for clean and efficient technologies like solar panels, or mandates for the environmentally necessary increases in distributed generation, you’d see even stronger incentives for residential solar power.

Learn more about Solar Carve-outs

California Electricity Prices


Grade: A

California's Electricity cost grade

Californians currently pay an average of 19 cents/kWh for electricity – one of the ten highest rates in the nation. And place like San Francisco and San Diego pay $.25 or $.30 per kWh, or more. That's INSANE!

We know you hate your electric bill. Really, we do. So let's do something about it. The reason your high electricity cost gets an "A" here is because it means you can save more money with solar! And as you’ve seen in the past few years, energy costs will continue to rise. In the nation overall, prices go up about 3.5% per year, but in some places in California, the utility companies have plans to increase retail prices by as much as 8% per year.

But you're not worried about that, because you're switching to solar, right? You're out there getting mulitple quotes for that home solar panel installation you're planning. You're ready to join the ranks of super smart Californians who know solar can save them thousands of dollars and add value to their homes. Good for you!

Find out why electricity prices matter

California Net Metering

NEM 2.0 - Statewide

Grade: A

California's Net Metering grade

Net metering (aka “Net Energy Metering," or NEM for short) is a term that means what we described above: every kWh you send to the grid reduces your electric bill by 1 kWh. California had a great NEM policy in the early 2000s, and solar boomed all around the state.

Then the percentage of energy coming from solar started to become significant, and the state Public Utilities Commission, under pressure from utility companies, decided it was time for a new NEM standard. They called in NEM 2.0, and despite what we just wrote about pressure from utility companies, it’s actually still pretty great for solar owners.

Here’s how NEM 2.0 works:

  • A homeowner buys a solar panel system and installs it on their roof.
  • The utility company sets them up with an “interconnection agreement,” for which they charge a small fee ($75-$150, depending on where you live). That allows the homeowner to get their system hooked up to the grid to start earning them credit
  • The homeowner also signs up for Time-of-Use billing, which means they pay more for electricity when lots of people are using it (peak time) and less when people aren’t using as much (off-peak).
  • The homeowner also gets bigger credit for solar energy sent to the grid at peak times, and lower credit for energy sent at off-peak times.
  • The resulting kWh are “netted” monthly, equaling usage minus production. The homeowner also has to pay a minimum monthly fee (the same as non-solar owners), and, here’s the kicker, a tiny amount for each solar kWh sent to the grid. That tiny amount is called a “non-bypassable charge,” and it’s about 2 cents per kWh.
  • At the end of each month, the customer pays the bill for the monthly charge, and non-bypassable charges.
  • At the end of the year, all the kWh that were sent to the grid are subtracted from all the kWh that the customer used, and a final bill called the “true-up” is due. If your solar system is sized to meet your usage and you hit that number, your true-up bill could be $0. If you used more than you sent to the grid, you have to pay for the balance. If your panels made more than you used all year, you get about 3-4 cents per kWh for the extra.

Whew, that sounds complicated! Well, you don’t know the half of it. On top of what we just told you, some utility companies offer different NEM-like billing arrangements that still meet the state’s requirements.

If you’re one of the millions of homeowners served by SDG&E, SCE or PG&E, your NEM arrangement will probably be much like we described above. If, on the other hand, you’re serviced by a municipal utility like SMUD or LADWP, you might have a very different experience.

Fortunately, your friendly local solar installer has dealt with NEM 2.0 for a while now, and they are the experts in helping you design a system that will maximize your savings. Connect with local solar experts near you to find out more about how you can save.

Learn more about net metering

California Interconnection Rules

Simplified for Homeowners

Grade: A

California's Interconnection Standards grade

In California, small renewables are exempt from paying the high costs associated with the interconnection studies, distribution system modifications or application review fees that we've seen be a problem in other states.

Only two areas remain utility companies aren't adequately restrained from overcharging you for interconnection: requiring a redundant external disconnect switch; and requiring you to carry separate liability insurance. While such safeguards make sense for very large energy systems, both of them are just a waste of money for small residential setups like yours. Whether or not you'll be required to pay for either depends on your utility company and its policies. One of our local partners can tell you for sure when you get one of your free quotes.

Learn more about solar interconnection rules

California Solar Incentives

Next to high electricity prices and net metering, solar incentives have traditionally been the most important factor for whether home solar power makes financial sense in a state. In the past, some states with otherwise lousy policy had tremendous incentives that drove down the up-front cost of going solar so much that homeowners could save oodles of money even without net metering or a good RPS.

These days, the big incentive most people can get is the Federal Solar Tax Credit that earns you 26% of your total system costs back after just 1 year. State incentives play less of a role than in the past, but some really good ones are still out there, ready to help homeowners go solar and save money before you know it.

Let's see how California measures up:

The availability of state solar incentives for residential solar systems was sourced from the Database of State Incentives for Renewables and Efficiency, utility company websites, and the state public utility commission.

California Solar Power Rebates

Varies by utility

Grade: C

California's Solar Rebates grade

California's solar power rebate program used to be extensive. The state enacted the California Solar Initiative (“CSI”) to encourage the development of solar power. The Initiative’s goal was to help create 3,000MW of new solar power by 2017, and they succeeded.

The original rebates available through the CSI were exhausted in 2014, but the mission lives on in the low-income SASH and MASH programs. Read more about the California Solar Initiative below.

Unfortunately for most residents of the state, the big utilities have long since closed their rebate programs. A couple municipal utilities still offer rebates to customers who install solar. Check the table below to see if there is still funding in your area:

2020 solar rebates for California municipal utilities

Utility CompanyRebate AmountNotes
PG&E, SCE, & SDGE (SASH program)$3,000/kWOnly for low-income applicants. Read more below
San Francisco$200 - $2,550 per kWVaries by system size, location, & applicant income
SMUD$300 per installationHandled by installer
Ukiah UtilitiesCurrently Revisingtbd

We realize these charts and tables might be a little confusing. That's why we strongly recommend getting custom quotes for solar including specific rebate amounts tailored to you, your budget and your utility. We’ll connect you with a local installer that can walk you through the process and even apply for rebates for you as part of installation. In many areas, you can go solar for $0 down!

Learn more about solar rebates

California Solar Tax Credits


Grade: F

California's Solar Tax Credits grade

Solar power in California used to qualify for a tax credit. Sadly, the solar tax credit went the way of the Dodo Bird in 2005. To be fair, the tax credits were probably allowed to expire because of the implementation of the huge CSI program, and all those solar rebates we just talked about. But we’d gladly take a tax credit and a rebate (nudge, nudge).

Learn more about state solar tax credits

Property Tax Exemption


Grade: A

California's Solar Property Tax Exemptions grade

If California isn’t giving you a tax credit anymore, it’s at least giving you some tax exemptions, right? Well... yes!

Until the end of 2024, new solar installations will be subject to no additional property taxes, based on their assesed value. That's a pretty good bargain, since the best data we have shows a home value increase of about 70% of costs.

For a typical 5-kW system in California, that's nearly $11,000 in home value that the assessors can't touch!

Sales Tax Exemption


Grade: F

California's Solar Sales Tax Exemption grade

One of the simplest ways for the California state legislature to encourage small scale clean energy adoption is to declare solar panel equipment exempt from state sales taxes as many other progressive states have done. Sadly, there is no such declaration.

Learn more about tax exemptions for solar

Low-income Solar Programs

Single and Multi-F

Grade: A

California's Solar Sales Tax Exemption grade

California is at the vanguard of states that offer programs to help low-income families go solar. If you live in California and have electricity service through one of the state's big 3 electric utilities, you could be eligible for a 100% free solar system that can provide call the power you need. Let's dive in to how that works, and who qualifies:

The California Solar Initiative Single-Family Affordable Solar Housing Program (SASH)

The SASH program was the first of its kind in the United States, and to this day, it remains the single most valuable low-income solar program for homeowners. The program is administered by Grid Alternatives, which is an excellent non-profit organization that both helps low-income families go solar and teaches people from all walks of life how to work in the solar industry.

Through Grid Alternatives, low-income homeowners can participate in the SASH program and receive additional funding to completely cover the cost they would have paid for a solar system. Here are the details that qualify a homeowner for the SASH Program:

  • Own and live in their home
  • Be customers of Pacific Gas & Electric (PG&E), Southern California Edison (SCE), or San Diego Gas & Electric (SDG&E)
  • Have a household income of 80% or below the median income for their area
  • Live in a home defined as “affordable housing” by California Public Utilities Code 2852

That last one might be a bit of a restriction. Here's what Code 2852 says:

An individual residence sold at an affordable housing cost to a lower income household that is subject to a resale restriction or equity sharing agreement, for which the homeowner does not receive a greater share of equity than described in paragraph (2) of subdivision (c) of Section 65915 of the Government Code , with a public entity or nonprofit housing provider organized under Section 501(c)(3) of the Internal Revenue Code that has as its stated purpose in its articles of incorporation on file with the office of the Secretary of State to provide affordable housing to lower income households.

If that describes your situation, connect with GRID Alternatives to learn about your options.

California's Multi-Family Affordable Solar Housing Program (MASH)

The MASH program differs from the SASH program in that it helps landlords who offer affordable housing to install solar panels. Those panels can be set up to produce electricity that both offsets common-area electricity needs OR benefits the tenants, and there are additional amounts available for systems that offer more than 50% of their electricity to reduce tenant electricity bills.

Unfortunately, all funds for the current MASH program are subscribed, meaning there's nothing left until the next round of funding comes through. For more information, check out the MASH program page at Go Solar California.

If you're a policymaker in any state in the union and you'd like to know more about how the California programs work, please check out our article about low-income programs that provide affordable solar in California.

Learn more about low-income solar programs available in the U.S.

In many ways, California is the ideal place to put solar panels on your home. Electricity is more expensive here than almost anywhere else in the country, and the sun shines bright for most of the year, meaning you recoup your investment quickly. And you can be sure you’ll get treated fairly, because there’s ample support from the state government to protect homeowners from shady utility company practices.

All-in-all, despite some necessary changes California has made in the past few years to its solar incentives and net metering system, we recommend going solar in California 100%.

Leave a Reply

25 Comment threads
2 Thread replies
Most reacted comment
Hottest comment thread
23 Comment authors
Ben ZientaraCarol WestfallObinaMikeJack Block Recent comment authors
newest oldest most voted
Notify of
Carol Westfall
Carol Westfall

What happens if you decide not to go solar? Are they going to penalize us?


The power in Nigeria is very unreliable. We are not even so lucky as to have the option whether to go solar or to use the national grid. Many times the only option is solar or endure darkness. The more affluent has generators. But we do what we can do educate on the benefits of solar.


No Sales Tax, No increase Property Tax and a 3rd Back within 18 Months.. if you do the 20 yr loan.. NOT the kWH

Jack Block
Jack Block

Hello, i have about 16,250 SF of parking structure space i would like to cover in solar, i was wondering how much energy i can predict to sell to the grid. My location is Souther California (Inland Empire)


Amazing informatoin, thank you.


you sound like a bunch of casket salesmen

Bobby Dias
Bobby Dias

When I designed California’s State Water Project I made it possible to put then-available solar panel racks on the banks of the inland part of the State Water Project. Maybe now is a good time to contract with the state for ?

john wilks
john wilks

this website was defintely very helpful. I’ve delt with a few different solar companies. jus for future reference the one i went with was clean energy solar out of orange county, ca. they did a great job…give them a call and see if they have something you can benefit from.


Love this site. Very informative!


As an author, thanks for the clear and clever writing


As of mid-2014, the the big three utilities have exhausted their funding for the rebates and have closed the waitlists for new applications.” There are still commercial rebates available in most utilities.

Dan Ringwald
Dan Ringwald

Great information you are providing here! If you are going to be analyzing solar production in different parts of CA, you need links to homeowners output. That would be useful for everyone. Here is my link and more
Thank you again for doing such a great job on educating all of us!

sommerhuse truust
sommerhuse truust

І am rеаlly delighted to glance at this webpage posts whіch сοnѕists
of plenty оf νaluable dаta, thanks for providing such stаtistics.


In your irvine array example you use 93% offset of the bill is that not a bit to much since tiers 1&2 are subsidized by the state.therefore lower cost then solar.


Hi ,I’m working in a dye house in downtown Los Angeles ,we have large industrial machines that use large amounts of power.I wonder if I should recommend my boss to look into it worth it?what are the cost for a large industrial plant?Where do I get info and estimates,ect.


I’m consdering working with a company who would install photovoltaic cells on all of our acres, which is well over 100 acres. I would like to know if California and/or the Federal Government offers tax incentives on the revenue that would be derived from the income?


You might want to update your rebate story. Currently PGE for residential is at Step 7 $0.65/ Watt with a disclaimer that they’re moving to Step 8 / $0.35 Watt.
You’ve got it currently at Step 5 $1.55/Watt.

Great site overall though!!

marc Michon
marc Michon

NICE site
11/22/09 PG&E in step 6 $ 1.10 watt


Great articles… I plan on reading everything you post on your site. I’m a new solar sales engineer.

FYI California “steps” have been updated since your last update..

PGE Residential 6

Tor a.k.a. "Solar Fred"
Tor a.k.a. "Solar Fred"

Thanks for the update, Michael. We try to keep things updated here, but we’re keeping track of 50 states plus, DC, so it’s great to have your help, and we hope you find our site useful for your solar career.

Tor a.k.a. "Solar Fred"
Tor a.k.a. "Solar Fred"

This is an email from a reader that wrote to me about some important information for Southern California Edison (SCE) rate customers. Please take note and take action if you can. __________________________________________ Fred, I read your recent post about net metering and found it interesting. There is a related matter going on that I thought I would bring to your attention. I am in SCE service area and am a net metering customer with a nominal 6 kW solar array that I have had for more than 5 yrs. I am on rate sch D-1 which I am sure you… Read more »

Tor a.k.a. "Solar Fred"
Tor a.k.a. "Solar Fred"

Hey, Bradley, You’re formula may be right…or not. The truth is that the IRS has not given specific tax guidance yet about whether to take the 30% before the rebate or after. There is also a question of whether the tax credit is counted as “income” and therefore taxable or rather it is simply a reduction in cost, and therefore not taxable. When the Feds do come out with guidance for 2009 with its new tax forms, the first year that the 30% uncapped tax credit is eligible, we’ll write a post. Meanwhile, you should not trust us for final… Read more »


In your example, shouldn’t you take the EPBB rebate off the projected total cost before you calculate the 30% Fed Tax credit??? i.e. shouldn’t the Fed Tax rebate be calculated as follows: 6kW system… $48,000 – ($1.55 x 6000) = $38,7oo then $38,700 x 0.3 = $11,610 Final est. price: $38,700 – 11,610 = $27,090 “…for both equipment and installation is a mid-range estimate of about $8/watt or $48,000, offset by the 30% federal tax credit and the $1.55/watt EPBB rebate. So, subtract the federal tax credit and we’re down to $33,600 ($48,000 * .30 = $14,400 tax credit). Next,… Read more »


Deciding to buy Solar? When deciding to buy Solar consider this FACT! Your decision is whether or not you want to own your sytem and lock in a lower cost of power for your family. Or do you want to rent power from a utility and pay them annual energy increases. It REALLY is that simple. Take advantage of Federal Tax credits and State incentives to lower your up front cost. Once your system is paid for it is the equivalent of getting a dividend check each month for making a good investment. Yes I do Have a System on… Read more »


Great site!!

I’m installing a large PV system on my house in Oceanside, Ca. It should generate over 10,000kWh/year!!!

I’m hosting a web site to chronicle the installation. If you want to check it out, it’s at:

Go green!!


bob farschi
bob farschi

Very nice and practical…easy to use too!

Great job, David

Subscribe to get solar news


Solar Power Rocks is a Wave Solar company

Wave Solar Logo